Intake Manifold Gasket
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 213
From: Pittsburgh PA
Intake Manifold Gasket
The Summit website suggested Fel Pro #1256, so I ordered it and received it. The Edelbrock instructions state Fel Pro #1204.
I believe the difference is that the first one has an OPEN exhaust crossover, while the second one is CLOSED.
Should I install the 1256 or get the 1204? What's the impact of the difference between open and closed exhaust cross over?
Thanks. :cheers:
I believe the difference is that the first one has an OPEN exhaust crossover, while the second one is CLOSED.
Should I install the 1256 or get the 1204? What's the impact of the difference between open and closed exhaust cross over?
Thanks. :cheers:
Racer
Joined: Apr 2001
Posts: 391
Likes: 1
From: Bend, Oregon
Re: Intake Manifold Gasket (foundvettelifeisgood)
You are right. I made the switch from an open flow to a blocked gasket. I do not notice a big difference upon startup but seems to run a little better when fully warmed up.
Garson
Garson
Melting Slicks
Joined: Oct 2000
Posts: 3,023
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From: TEXASTEXASTEXASTEXAS TEXASTEXASTEXASTEXAS
St. Jude Contributor
Re: Intake Manifold Gasket (Garson)
Go with the blocked. The crossover works as kind of a preheater for the carb, but the exhaust gasses (I'm told) can erode an aluminum manifold over time, and it really doesn't help that much. If you do have the open gaskets, make darned sure you use the correct metal plate between the two gaskets you're supposed to use to mount the carb. I've run my '69 with and without, and notice absolutely no difference either eay.
JB
JB
Burning Brakes
Joined: Jul 2000
Posts: 1,118
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Re: Intake Manifold Gasket (JB)
Is it ok to use a gasket that blocks the exhaust crossover if both the head and manifold have ports for a crossover? Will it hold up?
edit... Found some gaskets that have metal plates for the blockoff... Tnx anyway... :thumbs:
[Modified by Chris69, 10:02 PM 11/28/2003]
edit... Found some gaskets that have metal plates for the blockoff... Tnx anyway... :thumbs:
[Modified by Chris69, 10:02 PM 11/28/2003]
Melting Slicks
Joined: Oct 2000
Posts: 3,023
Likes: 2
From: TEXASTEXASTEXASTEXAS TEXASTEXASTEXASTEXAS
St. Jude Contributor
Re: Intake Manifold Gasket (Chris69)
Chris, that sure is an ugly car. :jester I may have to look for some pipes for mine now that I've seen yours.
You're right, if the crossover was just blocked with gasket material, it would burn out in a heartbeat, so they put a metal plate in the gasket.
JB
You're right, if the crossover was just blocked with gasket material, it would burn out in a heartbeat, so they put a metal plate in the gasket.
JB
